Thread rolling is a metal forging process that forms threads into the mirror image of a roller die. The process is different from metal cutting, grinding, and chasing because it does not remove any metal from the workpiece. Instead, thread rolling uses hardened steel dies to displace and mold ductile metals.

Cold heading process is one of the new technology of cutting metal without cutting pressure. It is a kind of plastic deformation produced by the metal under the action of external force, and with the help of the mold, so that the metal volume for redistribution and transfer, so as to form the required parts or blank processing method. Cold heading process is most suitable for producing bolts, screws, nuts, rivets, pins and other standard fastenersMaiJin Metal Professional COLD FORMING PROCESS-MAIJIN METAL manufacturers,Over 16 Years of Part Making